GOODWILL AND INTANGIBLE ASSETS (Details Textuals) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Estimated amortization expense for intangible assets, remainder of 2013	$ 14,017
Estimated amortization expense for intangible assets, 2014	17,499
Estimated amortization expense for intangible assets, 2015	15,645
Estimated amortization expense for intangible assets, 2016	14,384
Estimated amortization expense for intangible assets, 2017	14,304
Estimated amortization expense for intangible assets, 2018	14,185
Segment, Continuing Operations [Member]
Amortization expense for Intangible assets	5,278	4,147
Segment, Discontinued Operations [Member]
Amortization expense for Intangible assets		$ 45